Hello, I just got back some 4x5 Portra I shot and had developed at a local place and it looks god awful. On some of the images there is color shifts throughout the sky that are localized. There are obvious lines at the edge of the image and I do not know if this is due to my holder leaking, or if it is due to the processing of the film. The location and nature of the problem leads me to believe it was the processor. Here is a sample image. What do you think? The image is not really corrected or dusted, but the local shifts are visible.